Churn.



Ne. 667,250. Patented Feb. 5, Ism. s. T. Poms-n.

CHUHN.

(Applieeeien mean. 17, 1900.)

(No Iodel.)

f l f f UNTTED STATES lPATENT Orricn.

SAMUEL T. PORTER, OF LA GRANGE, ILLINOIS, ASSIGNOR OF ONE-HALF TO E. XV.PORTER, OF LEWISTOWN, MISSOURI.

CHURN.

SPECIFICATION forming part of Letters Patent N o. 667,250, datedFebruary 5, 1901.

Application led March 17, 1900. Serial No. 9.072. (No model.)

To all, whom, it may concern:

Be it known that I, SAMUEL T. PORTER, a citizen of the United States,residing at La Grange,in the countyof Lewis and State of Illi- 5nois,have invented a newand useful Ohnrn,ot`

which the following is a specication.

This invention relates to chnrns, and has for one object to provide animproved form of rotary dasher to force the cream outwardly Io in radialdirections from the dasher and to introduce air into the Volume of creamto effectually aerate the same, and thereby effect a quick and completeseparation ofthe butter.

A further object is to provide an improved I5 form of breaker fordetachable application to the body of the churn, so as to intercept theoutwardly-impelled cream and break up the same, thereby increasing theagitation of the cream.

With these and other objects in view the present invention consists inthe combination and arrangement of parts, as will be hereinafter morefully described, shown in the accom panying drawings,and particularlypoint- 25 ed ont in the appended claims, it being nnderslood thatchanges in the form, proportion, size, and minor details may be madewithin the scope of the claims Without departing from the spirit orsacricing any of go the advantages of the invention.

In the drawings, Figure l is a vertical sectional elevation of a churnconstructed in accordance with the present invention. Fig. 2 is a detailbottom plan view of the dasher.

; 5 Fig. 3 is a detail side elevation of the dasher. Fig. 4 is a detailperspective view of one of the detachable breakers. transverse sectionalView taken on the line 5 5 of Fig. 1.

Corresponding parts in the several gures of the drawings are designatedby like characters of reference.

Referring to the accompanying drawings, 1 designates the body of thechurn, which is i5 supported upon a frame comprising a base 2, one ormore uprights 3 at opposite sides of the base, and a transverse bar 4',which connects the upper ends of the opposite uprights.

Located centrally Within the churn-bodyis ;o an upright hollow rotarydasher-stem 5, the

Fig. 5 is a detail' lower end of which receives a suitable lug orprojection 6 upon the bottom of the churn to form a journal for thedasher-stem. The lower portion of the dasher-stem is provided with amarginal series of perforations 7 for the passage of air from theinterior of the dasher-stem to the interior of the churn to interminglewith the cream and effectually aerate the latter.

The dasher is formed by means of a pair of outwardly-directed marginalspiral flanges S, which intertwine so that their upper ends are upwardlydeiiected, and their lower ends are adjacent to the bottom of thechurn-body and also deflected downwardly. The lower extremity of eachspiral ange or dasher-blade is rebent upon the under side, so as to forma se mitubular Harige 9, which partly embraces the adjacent perforation7, so as to form a substantially radial conveyer for the air which isdischarged from the hollow stem. Similar seinitubular flanges 10 areprovided upon the under side of each spiral blade and in ad- Vance ofthe flanges 9, so as to partly embrace the other perforations.

The dasher is driven by means of a mastergear 11, mounted upon thecross-bar 4 of the frame and in mesh with a beveled gear 12, carried byan upright stub-shaft 13, the upper end of which finds a bearing in theunder side of the cross-bar. The lower end of this stub-shaft isprovided with a yoke 14, that carries a ring or collar 15 for thereception of the upper end of the dasher-stem, and asuitable set-screw16 is employed to connect the stem and the ring or collar.

To increase the agitation of the cream, there are provided one or morebreakers that eX- tend inwardly from the sides'of the churnbody and aredetachably connected thereto. As indicated in Fig. 4 of the drawings,each breaker comprises a sheet-metal plate 18, the lower edge of whichis beveled or inclined in- Wardly, and the shorter longitudinal edgeportion of the plate is bent or deflected to form a iiange 19. The bodyof the plate is stiffened and clamped between the opposite portions of astiff spring-Wire 20,the opposite end portions of which extend above theplate and are twisted into the spring-coils 21 and the sprin g IOO rif.667,250

arms or jaws 22 to embrace the upper edge of the mouth of thechurn-body, as shown in Fig. l, so that the breaker is heldsubstantially at right angles to the adjacent wall of the churn. Thelower portion of the wire is offset into a substantially rectangularloop or frame 23, that is covered by means of a sheet of wire-cloth orother foraminous material 24 to form a strainer, which is placed acrossthe inner end of the drain-opening 25, formed in one side of thechurn-body and adjacent to the bottom thereof. This opening is normallyclosed by a plug 26 or other suitable closure that is operable from theexterior of the churn. These breakers are designed for use especiallywith a circular or cylindrical churn-body to prevent the cream fromhaving a regular swirl and to increase the agitation of the cream. Oneor more of these breakers may be employed, and they are removable inorder that they may be readily cleansed. The lower edges of the breakersare inclined upwardly and inwardly toward the center of the churn, so asto accommodate different sizes of dashers and in order that a largedasher may revolve beneath said inclined edges.

By reference to Fig. 5 of the drawings it will be seen that by reason ofthe angularlyrelated disposition of the breaker-blade and the strainerthe latter rests against the inner wall of the churn-body, and therebyforms a lateral brace for the breaker, so as to resist lateral strainand prevent the breaker from being swung around against the churn-bodyby the force of the swirl of cream. Thus the breaker is detachably heldto the churn-body and is also braced against being displaced by themoving volume of cream.

From the foregoing description it will be apparent that the presentinvention provides an exceedingly simple and useful churn, the parts ofwhich may be readily assembled and also disconnect-ed for the purpose ofcleansing, and the cream `is thoroughly agitated and aerated in a simpleand convenient manner.

What I claim is- 1. In a churn, a rotary dasher, comprising a hollowstem, having perforations, and outwardly-directed spiral blades, havingtheir `ends rebent to embrace respective perforations, and form radialconveyers for the air discharged through the perforations.

2. In a churn, a chnrn-bodyhaving a drainopening formed through one sidethereof, and a breaker carried by the body of the churn, and having anangnlarly-related strainer disposed across the drain opening, bearingagainst the churn-body, and forming a lateral brace for the breaker.

3. In a churn, a churn-body having a drainopening formed through oneside thereof, a breaker removably carried by the chu rn-body, and havinga stiftening-wire, a portion of the latter being formed into alaterallyodset frame, and a foraminous covering for the frame andforming a strainer disposed across the drain-opening, said frame beingin contact with the churn-body and forming a lateral brace for thebreaker.

4. In a churn, the combination with the body thereof, having an openingin one side thereof, of a breaker, having a stiffening-wire thatembraces opposite sides of the breaker, the upper portions of the wirebeing formed into spring-jaws for engagement with the upper edge of thechurn-body, and the opposite portion of the wire being formed into alaterally-offset frame, and a sheet of foraminous material covering theframe,to form a strainer for covering the opening in the churn-body.

5. A breaker for a churn, comprising a sheet-metal plate, having anupwardly and outwardly inclined lower edge, and bent longitudinally toform a laterally-inclin ed ange, a stiffening-wire, which is bentintermediate of its ends to embrace opposite sides of the plate, theopposite ends of the wire extending above the plate and formed intospring-jaws, and the lower or intermediate portion of the wire beingformed into a frame, and a sheet of foraminous material covering theframe to form a strainer.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two Witnesses.

SAMUEL T. PORTER.

Wfitnesses:

J. H. NoLIN, HARRY NORMAN.

